CN108071690A - Rolling bearing system - Google Patents
Rolling bearing system Download PDFInfo
- Publication number
- CN108071690A CN108071690A CN201711108459.3A CN201711108459A CN108071690A CN 108071690 A CN108071690 A CN 108071690A CN 201711108459 A CN201711108459 A CN 201711108459A CN 108071690 A CN108071690 A CN 108071690A
- Authority
- CN
- China
- Prior art keywords
- windshied part
- windshied
- ring
- supply unit
- pump
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
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Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C33/00—Parts of bearings; Special methods for making bearings or parts thereof
- F16C33/30—Parts of ball or roller bearings
- F16C33/58—Raceways; Race rings
- F16C33/583—Details of specific parts of races
- F16C33/586—Details of specific parts of races outside the space between the races, e.g. end faces or bore of inner ring
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C33/00—Parts of bearings; Special methods for making bearings or parts thereof
- F16C33/30—Parts of ball or roller bearings
- F16C33/66—Special parts or details in view of lubrication
- F16C33/6637—Special parts or details in view of lubrication with liquid lubricant
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C33/00—Parts of bearings; Special methods for making bearings or parts thereof
- F16C33/30—Parts of ball or roller bearings
- F16C33/58—Raceways; Race rings
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C33/00—Parts of bearings; Special methods for making bearings or parts thereof
- F16C33/30—Parts of ball or roller bearings
- F16C33/66—Special parts or details in view of lubrication
- F16C33/6637—Special parts or details in view of lubrication with liquid lubricant
- F16C33/664—Retaining the liquid in or near the bearing
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C33/00—Parts of bearings; Special methods for making bearings or parts thereof
- F16C33/30—Parts of ball or roller bearings
- F16C33/66—Special parts or details in view of lubrication
- F16C33/6637—Special parts or details in view of lubrication with liquid lubricant
- F16C33/6659—Details of supply of the liquid to the bearing, e.g. passages or nozzles
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C19/00—Bearings with rolling contact, for exclusively rotary movement
- F16C19/02—Bearings with rolling contact, for exclusively rotary movement with bearing balls essentially of the same size in one or more circular rows
- F16C19/04—Bearings with rolling contact, for exclusively rotary movement with bearing balls essentially of the same size in one or more circular rows for radial load mainly
- F16C19/06—Bearings with rolling contact, for exclusively rotary movement with bearing balls essentially of the same size in one or more circular rows for radial load mainly with a single row or balls
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C2322/00—Apparatus used in shaping articles
- F16C2322/39—General build up of machine tools, e.g. spindles, slides, actuators
Abstract
Rolling bearing system includes：Bearing portion (20) including inner ring (21), outer shroud (22), intervenes multiple rolling elements (23) between inner ring (21) and outer shroud (22) and the retainer (24) of the multiple rolling element (23) of holding；With oil supply unit (40), it is disposed adjacently in the axial direction with bearing portion (20), and including the pump (43) with jet port (50), lubricating oil is ejected into bearing portion (20) as oil droplet from jet port (50).Oil supply unit (40) further comprises windshied part (51), windshied part (51) covering from jet port (50) spray oil droplet by pass through region, and windshied part (51) is arranged to very close to each other between windshied part (51) and the pump (43) of jet port (50) opening, and windshied part (51) is opened towards the target in bearing portion (20).
Description
Technical field
The present invention relates to a kind of rolling bearing system, which includes bearing portion and oil supply unit, the fuel feeding
Unit is disposed adjacently in the axial direction with the bearing portion.
Background technology
In recent years, in various lathes, in order to improve processing efficiency and production efficiency, it has been necessary to the increasing of the rotating speed of main shaft
Add.When main shaft rotate at high speed when, particularly, the lubrication in the bearing portion of supports main shaft is important.It is therefore proposed that there is one kind
Rolling bearing system, in the rolling bearing system, oil supply unit is disposed adjacently in the axial direction with bearing portion (referring to day
Present patent application announces special open 2004-108388 (JP2004-108388A)).Tank of the oil supply unit including storage lubricating oil,
Lubricating oil in the tank is supplied to pump of bearing portion etc..
In above-mentioned rolling bearing system, since the tank of storage lubricating oil is arranged on main shaft and housing together with bearing portion
Between narrow annular space in, the capacity of tank is restricted.Therefore, in order to allow oil supply unit long-term work, it is necessary to
Inhibit the glut (useless consumption) of lubricating oil.
The pump that oil supply unit described in JP2004-108388A includes is configured such that：Cause lubricating oil from pump
The end exudation of the tubular nozzle of body extension.The lubricating oil oozed out from nozzle end is increased to single oil droplet, and is maintained at
Nozzle end.Then, the stream of the air generated due to the rotation of bearing portion between inner ring and outer shroud, the oil droplet of holding by from
Nozzle end discharges.Oil droplet is carried to be fed into bearing portion by the stream of air.However, the oil droplet discharged from nozzle end
Not necessarily reaching needs the ball or raceway of fuel feeding, and may be attached to the part that fuel feeding is not required, and therefore may not
Contribute to the lubrication of bearing portion.That is, there is lubricating oil not reach the expectations section in bearing portion and therefore invalidly disappeared
The possibility of consumption.
In consideration of it, as the pump with another construction, there is pump 90 of the injection lubricating oil as oil droplet P as shown in Figure 7.
Using pump 90, oil droplet P can allow for reach the required part (such as ball 98) in bearing portion 99.Efficiently utilizing lubricating oil
Aspect, pump 90 is preferred.However, as described above, when bearing portion 99 (inner ring 95) rotates, between inner ring 95 and outer shroud 94
Annular space 93 in generate air stream.Particularly, when bearing portion 99 rotate at high speed when, the air in annular space 93
With flow at high speed (rotation).In this case, even if when oil droplet P is caused to fly out from pump 90, also have due to the stream of rotary air
It influences and oil droplet P does not reach the possibility of desired part (ball 98).As a result, lubricating oil is invalidly consumed, and
Therefore oil supply unit 100 can not possibly be allowed to work over a long time.Therefore, the frequency of maintenance increases, and for example in lathe
In the case of, production efficiency is lowered.
The content of the invention
The present invention provides a kind of rolling bearing system, and in the rolling bearing system, oil droplet reaches axis with smaller difficulty
Expectations section in bearing portion.
Rolling bearing system according to an aspect of the present invention includes：Bearing portion, the bearing portion include inner ring, outer
The holding of the multiple rolling elements and the multiple rolling element of holding of ring, intervention between the inner ring and the outer shroud
Device；And oil supply unit, the oil supply unit are disposed adjacently in the axial direction with the bearing portion, and the oil supply unit
Including the pump with jet port, lubricating oil is ejected into the bearing portion as oil droplet from the jet port.The oil supply unit
Further comprise windshied part, the windshied part covering from the oil droplet that the jet port sprays by by region, and
The windshied part is arranged to very close to each other, the windshied part between the windshied part and the pump of jet port opening
It is opened towards the target in the bearing portion.
In rolling bearing system, when bearing portion rotates, air is generated in the annular space between inner ring and outer rings
Stream, but the oil droplet from pump injection is covered by windshied part, and is therefore less likely to be influenced by the stream of air.Particularly, due to
Windshied part is arranged to very close to each other between windshied part and the pump of jet port opening, so, by the oil droplet of windshied part less
May be influenced by the stream of air very much, and thus be allowed to smaller difficulty reach bearing portion in expectations section (target).
When the oil droplet that is sprayed from jet port hits rolling element, oil droplet can be used for inner ring and rolling element it
Between, the lubrication between outer shroud and rolling element and between retainer and rolling element.However, also have from jet port
Flight oil droplet in circumferential direction between rolling element adjacent to each other by possibility.Therefore, the oil sprayed from jet port
The injection direction of drop can be directed towards the direction of the raceway in inner ring or outer ring, and the multiple rolling element connects with rolling path rolling
It touches.In this case, even if the oil droplet from pump injection does not strike against rolling element, oil droplet also impinges on raceway and is attached on raceway
The rolling element (ball) of rolling.Therefore, lubricating oil can contribute effectively to the lubrication of bearing portion.In this case, from spray
The direction of the entrance of loophole towards the outlet of jet port can be tilted compared with bearing axis so that injection direction is directed towards rolling
The direction in road, jet port linear extension.Even if the oil droplet therefore, it is possible to provide from pump injection does not strike against rolling element oil droplet and still hits
Hit the construction of raceway.In this case, when in windshied part oil droplet by interior zone it is sufficiently wide when, the oil droplet of injection can
Pass through windshied part by ground.However, even if interior zone is not wide, when in windshied part oil droplet by interior zone compared in bearing
When heart line is inclined upwardly in the side identical with the direction of the entrance from jet port towards the outlet of jet port, the oil droplet of injection also can
Enough it is smoothly through windshied part.
Windshied part can be arranged in a part for oil supply unit in circumferential direction, and windshied part can have arc
Shape, the arc have predetermined length in circumferential direction.By this construction, can make oil droplet in windshied part by inner area
The circumferential scope in domain is wide.In this case, windshied part can have the shape that radical length reduces towards each circumferential end.
Since windshied part is from pump towards bearing portion protrusion, windshied part is located in the stream of air.Since windshied part has above-mentioned shape, so
It is less likely the stream for hindering air.If the stream of air is greatly interfered with, there is the possibility for causing vibration etc. in bearing portion.
Using said structure, this vibration can be prevented.
For the bearing portion, oil supply unit can be arranged on the first side on the axial direction, so as to
It is adjacent with the bearing portion；Retainer can include first annular portion and bar portion, for the multiple rolling element, institute
State first side that first annular portion is arranged on the axial direction, the bar portion is from the first annular portion towards institute
State the second side extension on axial direction；And the terminal part of windshied part can be positioned compares institute from the multiple rolling element
The outer surface for stating first side on the axial direction in first annular portion is near from the multiple rolling element.It utilizes
This construction, the distal portion of windshied part in a part for the first annular portion of retainer and inner ring or outer ring (with it is first annular
The surface that portion faces in radial directions) between.Therefore, windshied part is configured to extend close to the position of rolling element.Cause
This, in most of region, by windshied part, can prevent the rotation due to bearing portion and the annular between inner ring and outer rings
The stream of the air generated in space (inside of bearing portion) directly hits oil droplet.Therefore, it is possible to which oil droplet is allowed to be arrived with smaller difficulty
Up to target.
For example, rolling element it is big it is slight in the case of, between the first annular portion of retainer and inner ring or outer ring
The narrow space of formation, and the terminal part of windshied part is located in this space, it is necessary to prevent the terminal part and first annular portion
Deng contact.Therefore, first annular portion can be equipped with gap forming portion, which is configured in first annular portion and gear
Gap is formed between the terminal part in wind portion.Using this construction, though when windshied part distal portion in narrow space when,
In the case where windshied part is not interfered with retainer (first annular portion) terminal part of windshied part can be set first from rolling
Part is nearer from rolling element than the outer surface of the first side in the axial direction in ring part.In this case, except the first ring
Outside shape portion, retainer may further include the second ring part, for the multiple rolling element, second ring
Shape portion is arranged on the second side on the axial direction, and second ring part is connected to the bar portion；And
And the cross sectional shape of first annular portion and the second ring part can be mutually symmetrical.In this case, first annular portion and the second ring
The cross sectional shape in shape portion is mutually symmetrical, i.e. sets gap in each ring part in first annular portion and the second ring part
Forming portion.Therefore, it is possible to prevent in the region and retainer of the first side in the axial direction in retainer in axial direction
Weight balancing is lost between the region of the second side on direction.Therefore, it is possible to stablize the circling behavior of retainer, and thus
The verticity of bearing portion can be improved.
Above-mentioned aspect according to the present invention is covered from the oil droplet of pump injection by windshied part, and therefore oil droplet is less likely
The stream of the air generated by the rotation due to bearing is influenced.Therefore, it is possible to which oil droplet is allowed (to be easier with smaller difficulty
Ground) reach bearing portion in expectations section (target).As a result, it can prevent the useless consumption of lubricating oil.
Description of the drawings
Feature, advantage and the technology and industrial significance of the example embodiment of the present invention are described below with reference to accompanying drawings,
In these attached drawings, same reference numeral represents same element, and wherein：
Fig. 1 is the sectional view for showing rolling bearing system according to the embodiment.
Fig. 2 is the sectional view of the oil supply unit as seen in the axial direction.
Fig. 3 is for illustrating the sectional view of pump, windshied part and the schematic configuration of the part near pump and windshied part.
Fig. 4 is the front view of windshied part and pump；
Fig. 5 is the front view for showing windshied part according to another embodiment.
Fig. 6 is for illustrating pump, windshied part and the part near pump and windshied part in still another embodiment
Schematic configuration sectional view；And
Fig. 7 is the sectional view of the rolling bearing system in correlation technique.
Specific embodiment
Fig. 1 is the sectional view for showing rolling bearing system according to the embodiment.The rolling bearing system 10 shown in Fig. 1
The main shaft 7 of the main shaft device of (hereinafter also referred to " bearing arrangement 10 ") support lathe so that main shaft 7 is rotatable.Bearing fills
10 are put to be accommodated in the bear box 8 of main shaft device.In Fig. 1, main shaft 7 and bear box 8 are shown by double dot dash line.Bearing
Device 10 is also applied for the device in addition to lathe.In the following description, by the side parallel with the center line C of bearing arrangement 10
To be known as " axial direction ", and by the direction vertical with the axial direction be known as " radial direction ".
Bearing arrangement 10 includes bearing portion 20 and oil supply unit 40.The bearing portion 20 includes inner ring 21, outer shroud 22, multiple rollings
Pearl (rolling element) 23 and the retainer 24 for keeping ball 23.Bearing portion 20 forms ball bearing (rolling bearing).Bearing fills
It puts 10 and further comprises tubular internal annular compartment part 17 and the outer ring spacer 18 of tubular.
Oil supply unit 40 is with annular shape as a whole, and the footpath that oil supply unit 40 is attached to outer ring spacer 18 is inside
Side, and oil supply unit 40 is positioned adjacent in the axial direction with bearing portion 20.Oil supply unit 40, which has, supplies bearing portion 20
To the function of lubricating oil.The detailed configuration and function of oil supply unit 40 will be described later.In this embodiment, oil supply unit 40
(body part 41) and outer ring spacer 18 are separated components.However, oil supply unit 40 and outer ring spacer 18 can be with each other one
It is formed body.In this case, oil supply unit 40 is for supplying lubricating oil, and also serves as outer ring spacer.
In this embodiment, outer shroud 22, outer ring spacer 18 and oil supply unit 40 are attached to bear box 8, so as to not
It can rotation.Inner ring 21 and internal annular compartment part 17 rotate together with main shaft 7.Therefore, outer shroud 22 is used as non-rotary retainer ring, and interior
Ring 21 is used as the rotating ring rotated together with main shaft 7.
Inner ring 21 is Cylinder shape constructional element of the cooperation on the periphery of main shaft 7, and formed on the periphery of inner ring 21 raceway (with
It is known as " inner race 25 " down).In this embodiment, inner ring 21 and internal annular compartment part 17 are separated components.However, although not
Show, but inner ring 21 and internal annular compartment part 17 can be formed integrally with each other (prevent inner ring 21 and internal annular compartment part 17 from
It is separated from each other).Outer shroud 22 is fixed to the Cylinder shape constructional element of the inner peripheral surface of bear box 8, and in the inner circumferential of outer shroud 22
Form raceway (hereinafter referred to as " outer-race ball track 26 ").In this embodiment, outer shroud 22 and outer ring spacer 18 are separated components.
However, although being not shown, outer shroud 22 and outer ring spacer 18 can be formed integrally with each other so that outer shroud 22 and outer ring spacer
18 cannot be separated from each other.Even if when outer shroud 22 and outer ring spacer 18 are formed integrally with each other, oil supply unit 40 is also fixed
In retainer ring side.
Ball 23 is intervened between inner ring 21 and outer shroud 22, and ball 23 rolls on inner race 25 and outer-race ball track 26
It is dynamic.Retainer 24 is with annular shape, and retainer 24 is equipped with multiple recesses 27 along its circumferential direction.Ball 23 and guarantor
Holder 24 is arranged in the annular space 11 being formed between inner ring 21 and outer shroud 22.
Retainer 24 is ring-shaped as a whole.Retainer 24 includes：Positioned at the one side of ball 23 (i.e. compared with ball 23
For the first side in the axial direction) ring part 28a；Positioned at ball 23 opposite side (i.e. for ball 23
The second side on axial direction) ring part 28b；And multiple bar portions 29 that ring part 28a and 28b are connected to each other.In ring
Between shape portion 28a and 28b, each recess 27 is formed between two bar portions 29 of correspondence adjacent to each other in circumferential direction.
Single ball 23 is accommodated in each recess 27.By this construction, retainer 24 can be in circumferential direction with rule
Interval holding ball 23.
In retainer 24, the ring part 28a of the first side (that is, in 40 side of oil supply unit) in the axial direction is set
It can be slided on the shoulder 30 of outer shroud 22.Therefore, retainer 24 passes through 22 radial positioning of outer shroud.That is, retainer 24
It is guided by outer shroud 22, in other words, retainer 24 is the retainer (holding of bearer ring guiding of the outer shroud guiding in bearing portion 20
Device).
Retainer 24 is made of resin (such as phenolic resin or polyether-ether-ketone (PEEK) resin).In inner ring 21 and outer shroud 22
Each ring be made of steel (such as bearing steel).Ball 23 can be made of the steel of such as bearing steel or can be by such as
The ceramics of silicon nitride are made.
Fig. 2 is the sectional view for the oil supply unit 40 seen in the axial direction.Oil supply unit 40 has annular as a whole
Shape.Oil supply unit 40 includes tank 42 and pump 43.Tank 42 and pump 43 are arranged in the annular body portion 41 of oil supply unit 40.For
Oily unit 40 includes control unit 44 and power supply unit 45, and further comprises various sensors (although being not shown).
Body part 41 is attached to the inner peripheral portion of outer ring spacer 18, and body part 41 is used as the frame for keeping 43 grades of pump
Frame.Body part 41 is annular construction member.In body part 41, hollow space is set, and pumps 43,45 quilt of control unit 44 and power supply unit
It is arranged in these hollow spaces.One hollow space is used as tank 42.Therefore, including body part 41, tank 42, pump 43, control unit
44th, the oil supply unit 40 of power supply unit 45 etc. is configured to individual unit.
In fig. 2, tank 42 is configured to storage lubricating oil, and tank 42 is connected by pipe 46 with pump 43, to allow to moisten
Lubricating oil is flowed into pump 43.Although being not shown, the holding member (porous member) for keeping lubricating oil can be set in tank 42.
Pump 43 includes piezoelectric element 43a.Due to the operation of piezoelectric element 43a, 43 grease chamber (inner space) 43b is pumped
Volume is changed, and therefore, the lubricating oil in grease chamber 43b can be discharged in the annular space 11 of bearing portion 20 (referring to
Fig. 1).Grease chamber 43b is to pump to be used for the space for storing lubricating oil in 43.The nozzle (jet port) 50 of pump 43 is connected with grease chamber 43b, and
It is opened towards the inner race 25 of bearing portion 20.Nozzle 50 is in the (hereinafter referred to as " pump of wall portion 49 for the pump body for being formed on pump 43
Wall portion 49 ") in small through hole form.Due to the operation of piezoelectric element 43a, from nozzle 50 using lubricating oil as oil droplet P with first
Beginning speed is discharged.That is, (to be sprayed with the nozzle formed in the head of the ink-jet printer for example used from printing technique
Loophole) black mode similar mode is discharged, the nozzle 50 of oil droplet P from pump 43 flies.
Power supply unit 45 (referring to Fig. 2) supply is used to pump the electric power of 43 operation.Control unit 44 is capable of control operation pump 43
Periodically.
Therefore, pump 43 is configured such that grease chamber 43b receives lubricating oil from tank 42, and makes the lubricating oil in grease chamber 43b
As oil droplet P from nozzle 50 towards bearing portion 20 in target injection (flight).In order to efficiently use lubricating oil, pass through pump 43
Each discharging operation sprays the oil droplet P of predetermined amount, and the oil droplet P of the predetermined amount is made to reach target in bearing portion 20.Pass through pump
43 each discharging operation sprays several picoliters to several nanoliters of lubricating oil as oil droplet P from nozzle 50.In this embodiment,
Target is ball 23 or inner race 25.That is, when being directly targeted ball 23, because having oil droplet P in-flight adjacent
Ball 23 between the possibility passed through, therefore also target inner race 25.
As shown in Figure 3, oil supply unit 40 further comprises windshied part 51, the windshied part 51 keeping out the wind as oil droplet P.Figure
3 be for illustrating the sectional view of the schematic configuration of pump 43, windshied part 51 and the part near pump 43 and windshied part 51.Figure
3 be the view of the section for the center line C (referring to Fig. 1) for including rolling bearing system 10.In this embodiment, windshied part 51 is from pump
43 extend near ball 23, and windshied part 51 is located between the shoulder 31 of inner ring 21 and the ring part 28a of retainer 24.
The terminal part 53 of windshied part 51 is oriented from axial external surface 28c of the ball 23 than the ring part 28a of retainer 24 from ball
23 is near.Inner ring 21 and retainer 24 (ring part 28a) are configured to windshied part 51 not interfere, and in inner ring 21 and ring part
Each in 28a sets at least 0.1 millimeter of gap between windshied part 51.When in windshied part 51 (terminal part 53) and annular
When having the possibility of interference between portion 28a, cut-away (chamfering) 60 (see Fig. 6) can be set at a part of ring part 28a.
To the construction shown in Fig. 6 be described later.
In figure 3, (nozzle 50 is beaten at the 49a of side surface by the base portion 51a of windshied part 51 and the side surface 49a of pump wall portion 49
Open) it is in close contact so that windshied part 51 is arranged to very close to each other between windshied part 51 and pump 43.Side surface 49a is a table
Face, nozzle 50 are opened at the head surface.It is shown in FIG. 3：In radial inner region and radial outer region, in windshied part
It is very close to each other between 51 and pump wall portion 49.In addition, (referring also to Fig. 4) in two side areas in circumferential direction, in windshied part 51
Also it is very close to each other between pump wall portion 49.Therefore, nozzle 50 outlet 50b around it is all-round on, windshied part 51 and pump
It is very close to each other between wall portion 49.That is, windshied part 51 is opened only at the terminal part 53 of 23 side of ball, and in windshied part 51
Other parts at close.
Windshied part 51 and pump 43 are separated components, and windshied part 51 is arranged on the body part 41 equipped with pump 43.
Body part 41 and windshied part 51 can be formed integrally with each other or can be separated component.Body part 41 and windshied part 51
It can be formed from a resin.Although being not shown, the pump wall portion 49 and windshied part 51 of the part as pump 43 can be with each other one
It is formed body.That is, any construction may be employed, as long as windshied part 51 is arranged between windshied part 51 and pump wall portion 49
It is very close to each other, and windshied part 51 is continuous with pump wall portion 49 under the fully-assembled state of oil supply unit 40.
Windshied part 51 has the hole 54 for extending through windshied part 51.One in first side in the axial direction in the hole 54
Partly (left part in Fig. 3) is opened towards nozzle 50, and is closed by pump wall portion 49.The second side in the axial direction in hole 54
A part (right part in Fig. 3) opened towards inner race 25.Cross-sectional area (that is, oil droplet P by the area) ratio in hole 54
The area of section of nozzle 50 is sufficiently large (10 times or more big) and therefore more sufficiently large than oil droplet P.Therefore, the oil sprayed from nozzle 50
Drop P by hole 54 and reaches target (ball 23 or inner race 25).The interior zone K2 of windshied part 51 is formed by hole 54, and interior
Portion region K2 and perimeter K3 are limited by windshied part 51.Interior zone K2 is the region included through region K1, from nozzle 50
The drop P of injection passes through region K1 by this.Therefore, windshied part 51 is configured to：Cover the oil droplet P sprayed from nozzle 50
By region K1, and towards in bearing portion 20 target open.
In construction shown in Fig. 1 and Fig. 3, pump 43 (is joined compared with center line (bearing axis) C of bearing arrangement 10
See Fig. 1) it tilts so that the injection direction of the oil droplet P sprayed from nozzle 50 is directed towards the direction of inner race 25.That is,
In this embodiment, pump 43 has rectangular shape, and in each section shown in Fig. 1 and Fig. 3, pumps 43 radial direction
Surface 43c in outside is tilted compared with center line C.Nozzle 50 is by by pumping the logical of 49 linear extension of wall portion (extending linearly)
Hole is formed.Through hole extension is oriented parallel to surface 43c.Therefore, because entirely pump 43 is inclined, so nozzle 50 is also inclining
Under ramp-like state.In each figure in Fig. 1 and Fig. 3, for the ease of understanding the inclination of pump 43, angle of inclination is shown as being more than
Actual angle.Therefore, in this embodiment, by linear nozzle 50 (referring to Fig. 3) from its entrance 50a towards its outlet
In the case that the direction of 50b is known as nozzle direction, by the way that nozzle direction is tilted compared with center line C, by the injection side of oil droplet P
It is set as the direction towards inner race 25 to (that is, the direction of spray-droplet P).
In order to which the injection direction of oil droplet P to be set as to the direction towards inner race 25, along the dummy line of nozzle direction
(i.e. along oil droplet P injection direction dummy line) be set to across from the axial direction first in inner race 25
The scope of one end 25b of the second side in the axial direction in one end 25a to inner race 25 on side.Nozzle direction is (empty
Intend line) it is set to be greater than 0 (zero) degree and equal to or less than 10 degree of (that is, nozzle sides compared with the angle of inclination of center line C
The angle being set to the angle of inclination compared with center line C in such as 0 degree to 10 degree of scope).
According to the inclination of pump 43, windshied part 51 is arranged to also tilt in a same direction.In this embodiment, entirely
Windshied part 51 is inclined.Therefore, (oil droplet P by) interior zone K2 in windshied part 51 compared with center line C with spray
The identical side in mouth direction is inclined upwardly, and therefore, even if when interior zone K2 is not in radial directions especially wide, injection
Oil droplet P can also be smoothly through windshied part 51.When the inclination due to entire windshied part 51 in the terminal part of windshied part 51
When having the possibility of interference between 53 and the shoulder 31 of inner ring 21, although being not shown, instead of entire windshied part 51 is tilted, can with
Only hole 54 is formed as tilting.
As long as the injection direction of the oil droplet P sprayed from nozzle 50 can be set to the direction towards inner race 25, then
Nozzle direction need not be tilted compared with center line C, i.e., nozzle direction can be parallel to center line C.Even if the oil droplet P of injection and gear
Wind portion 51 (inner wall surface) contacts, and since contact angle is small, oil droplet P rebounds from inner wall surface and can fly from windshied part 51 towards target
Row.
As described above, in the rolling bearing system 10 of the embodiment, when inner ring 21 rotates, retainer 24 and ball 23
It rotates together, and therefore, air present in the annular space 11 between inner ring 21 and outer shroud 22 is due to retainer 24
It rotates and rotates.Particularly, when inner ring 21 rotate at high speed when, the air in annular space 11 is also rotate at high speed.Therefore, such as
Fruit is not provided with windshied part 51, when from 43 spray-droplet P of pump, there is following possibility：The stream of rotary air carries (movement) oil droplet
P, and oil droplet P does not reach desired target (ball 23 or inner race 25).However, in this embodiment, oil supply unit 40 wraps
Include windshied part 51, and windshied part 51 cover the oil droplet P sprayed from nozzle 50 by region K1, and 51 court of windshied part
It is opened to target.Therefore, by protecting the oil droplet P of the rotary air in annular space 11 and making oil droplet P point-blank by interior
Portion region K2, windshied part 51 allow oil droplet P to reach target with smaller difficulty.
Therefore, covered from the oil droplet P of 43 injection of pump by windshied part 51, and be therefore less likely to be influenced by the stream of air.It is special
Not, in this embodiment, as described above, windshied part 51 is arranged to (the pump wall of pump 43 opened in windshied part 51 and nozzle 50
Portion 49) between it is very close to each other.Therefore, the air in the K3 of perimeter enters interior zone K2 not around windshied part 51, and
And therefore, it is less likely to be influenced by the stream of air by the oil droplet P of windshied part 51, and is allowed to (that is, hold with smaller difficulty
Change places) reach bearing portion 20 in expectations section (target).Therefore, it is possible to prevent the useless consumption of lubricating oil.Therefore, even if working as tank
When 42 capacity is restricted, 40 long-term of oil supply unit also can allow for work.
When the oil droplet P sprayed from nozzle 50 hits ball 23, oil droplet P can be used between inner ring 21 and ball 23
And the lubrication between outer shroud 22 and ball 23.However, there is the oil droplet P of flight ball adjacent to each other in circumferential direction
The possibility passed through between 23.However, as noted previously, as the injection direction from the oil droplet P of the injection of nozzle 50 is set to court
To the direction of inner race 25, so, even if oil droplet P does not strike against ball 23, oil droplet P also impinges on inner race 25.Therefore, lubricate
Oil can contribute effectively to the lubrication of bearing portion 20.
Fig. 4 is the front view of windshied part 51 and pump 43, that is, shows windshied part 51 and pump 43 as seen in the axial direction
View.In the front view, windshied part 51 has arc, which has predetermined length, and the shape along circumferential direction
Do not change in axial direction, be identical.Hole 54 is formed on a part (center in the embodiment of arc windshied part 51
Portion) at, and nozzle 50 is opened in the scope in hole 54.Hole 54 has cross section longer than in the radial direction in circumferential direction
Shape, and hole 54 has curved elliptical shape along circumferential direction.In this embodiment, windshied part 51 is by partly in circumferential direction
Side is set up (in other words, windshied part 51 is arranged in a part in circumferential direction for oil supply unit 40).Alternatively,
Windshied part 51 can be arranged on with annular shape on all-round, and hole 54 can be formed at a part for the ring part,
And nozzle 50 can be opened in hole 54.
As shown in Figure 4, a part of the side surface 49a (head surface) of the covering of arc windshied part 51 pump wall portion 49, and
Therefore, windshied part 51 is arranged to very close to each other between windshied part 51 and pump 43.Therefore, in this embodiment, windshied part 51
Partly set that (in other words, windshied part 51 is arranged in circumferential direction the one of oil supply unit 40 in circumferential direction
In part), and windshied part 51 has arc, and which has predetermined length along circumferential direction.Therefore, it is possible to pass through oil droplet
Interior zone K2 circumferential ranges it is wide.
As shown in Figure 4, in front view, windshied part 51 has radical length (radial dimension) towards each circumferential end
The shape that portion 52a and 52b reduce.It is tapered that is, windshied part 51 has towards each circumferential end 52a and 52b
Shape.By this construction, the influence of the stream of air caused by the rotation of bearing portion 20 can be reduced.That is,
Since windshied part 51 43 protrudes (referring to Fig. 3) from pump towards bearing portion 20, windshied part 51 is located in the stream of air.Therefore, pass through
As described above circumferential end 52a and 52b is made to be tapered (referring to Fig. 4), be less likely the stream for hindering air.Though that is,
So the windshied part 51 as barrier is present in the stream of air, but the stream of air can be adjusted by above-mentioned shape.Such as
The stream of fruit air is greatly interfered with, then has the possibility for causing vibration etc. in bearing portion 20.According to this embodiment, can prevent
This vibration.
Fig. 5 is the front view for showing windshied part 51 according to another embodiment, that is, is shown as seen in the axial direction
The view of windshied part 51 and pump 43.Windshied part 51 shown in Fig. 5 includes：The covering part 55 of a part for covering pump wall portion 49；
With the body part 56 that keeps out the wind with short cylinder shaped shape being arranged at a part for the covering part 55.It is pumped since covering part 55 covers
A part for wall portion 49, so windshied part 51 is arranged to very close to each other between windshied part 51 and pump 43.Also it is shown in Figure 5
Construction in, windshied part 51 is partly set in circumferential direction, and (in other words, windshied part 51 is arranged on oil supply unit 40
In a part in circumferential direction).The hole 57 with circular section shape is formed in the centre for the body part 56 that keeps out the wind, and
Oil droplet passes through hole 57.In Figure 5 in shown construction, windshied part 51 and body part 41 are separated components, but windshied part 51
It can be integrally formed with body part 41.
One rolling bearing system will be described with reference to Fig. 6, in the rolling bearing system, in the ring part of retainer 24
Cut-away (chamfering) 60 is set at a part of 28a.In the one side of bearing portion 20, oil supply unit 40, i.e. 40 phase of oil supply unit are set
The first side in the axial direction is set for bearing portion 20, so as to adjacent with bearing portion 20.The retainer 24 of bearing portion 20
Including：The ring part 28a (first of the first side in the axial direction is set for the ball 23 as rolling element
Ring part 28a)；From ring part 28a towards the bar portion 29 of the second side extension in the axial direction；And compared with ball 23 and
Speech is set the second side in the axial direction and is connected to the second ring part 28b of bar portion 29.Oil supply unit 40 includes gear
Wind portion 51, which is used as keeping out the wind from the oil droplet P of 43 injection of pump, and the terminal part 53 of windshied part 51 is positioned
It obtains near from ball 23 from outer surface 28c of the ball 23 than the first side in the axial direction in ring part 28a.That is,
The terminal part 53 of windshied part 51 is located at the second side in the axial direction compared with outer surface 28c.The oil droplet P sprayed from nozzle 50
It flies and passes through the inner space (interior zone K2, hole 54) of windshied part 51.Above-mentioned construction and the construction shown in Fig. 3 (Fig. 5)
It is identical.
In this configuration, the terminal part 53 of windshied part 51 is located at the annular of the first side in retainer 24 in the axial direction
Between portion 28a and the shoulder of inner ring 21 31 (surface faced in radial directions with ring part 28a).Therefore, 51 quilt of windshied part
It is configured to extend to close to the position of ball 23.Therefore, in most of region, by windshied part 51, can prevent due to axis
The stream of the rotation held and air that the annular space 11 (inside of bearing) between inner ring 21 and outer shroud 22 generates directly is hit
Oil droplet P.Target (ball 23 is reached with smaller difficulty therefore, it is possible to allow to have flown and pass through the oil droplet P of the inside of windshied part 51
Or inner race 25).
In figure 6 in shown construction, cut-away 60 is arranged in ring part 28a first in the axial direction
At a part for side, and in the inner peripheral portion in ring part 28a.Cut-away 60 is set to be used for：Even if when in ring part 28a and
When the space Q formed between the shoulder 31 of inner ring 21 is narrow, the terminal part 53 for being also prevented from windshied part 51 contacts ring part 28a.Make
Terminal part 53 to be used to prevent windshied part 51 contacts the means of ring part 28a, in figure 6 in shown construction, in ring part
Gap forming portion in the form of cut-away 60 is set in 28a.However, the gap forming portion can have other shapes.
In gap forming portion, the thickness of ring part 28a can be reduced.For example, although being not shown, instead of the straight section shape shown in Fig. 6
Shape, gap forming portion can have curved cross sectional shape.Therefore, because the first side, that is, oil supply unit 40 in the axial direction
It is set in the ring part 28a that side is set and is configured to form gap between ring part 28a and the terminal part 53 of windshied part 51
Gap forming portion (cut-away 60), even if when the space Q that the terminal part 53 of windshied part 51 is located at is narrow, it also can be in windshied part
51 not with ring part 28a interfere in the case of by the terminal part 53 of windshied part 51 set from ball 23 than in ring part 28a
The outer surface 28c of the first side in the axial direction is near from ball 23.
The cut-away 60 (gap forming portion) of ring part 28a shown in Fig. 6 is formed by conical surface.It can be by tool
The part for having the ring part 28a of substantially rectangular cross-section shape carries out chamfering (that is, performing secondary operation) and forms cut-away 60
(gap forming portion).Be formed from a resin due to retainer 24 and formed by mold, so, if a part for mold have with
The corresponding shape of gap forming portion then when moulded holder 24, can form gap forming portion on ring part 28a.
In addition, in figure 6 in shown construction, in retainer 24, the of the second side in the axial direction is set
Second ring portion 28b includes the part identical with the gap forming portion of first annular portion 28a.That is, the second ring part 28b
Equipped with cut-away 60.Therefore, as shown in Figure 6, in the section including center line C (referring to Fig. 1), on center line L (in this
Retainer 24 is divided into the region of the first side in the axial direction and the region of the second side in the axial direction by heart line L),
The area of the cross sectional shape of first annular portion 28a in the region of the first side on axial direction and the second side in the axial direction
The cross sectional shape of the second ring part 28b in domain is mutually symmetrical (line is symmetrical).As described above, windshied part 51 and first in order to prevent
Ring part 28a interferes, and gap forming portion (cut-away 60) is arranged in first annular portion 28a.By in the second ring part 28b
In be also provided with cut-away 60, make positioned at ball 23 corresponding side in the axial direction first annular portion 28a and second annular
The cross sectional shape of portion 28b is mutually symmetrical.Therefore, it is possible to prevent the region of the first side in the axial direction in retainer 24
Weight balancing is lost between the region of the second side in the axial direction in retainer 24.As a result, holding can be made
The circling behavior of device 24 is stablized, and thus can improve the verticity of bearing portion.
Although as described above, retainer 24 is radially oriented by outer shroud 22, retainer 24 can be displaced radially
Predetermined length (preliminary dimension).The predetermined length in a state that retainer 24 and outer shroud 22 are set concentrically with respect to one another in ring part
The length e1 (see Fig. 6) of the radial clearance formed between 28a and outer shroud 22 (shoulder 30) is consistent.Therefore, in ring part 28a and gear
Smallest radial length e2 between wind portion 51 is set so that：Even if when retainer 24 is displaced radially (in figure 6, in ring
Shape portion 28a is close to the square upward displacement of inner ring 21) predetermined length e1 when, ring part 28a and windshied part 51 are not also in contact with each other.
That is, the smallest radial length e2 between ring part 28a and windshied part 51 is set to be greater than retainer 24 and radially may be used
The maximum (length e1) of displacement.As shown in Figure 6, by setting gap forming portion (cut-away 60), energy in ring part 28a
Enough smallest radial length e2 increased between ring part 28a and windshied part 51.
In addition to the shape of the ring part 28a (28b) of retainer 24 is different from each other, the axis of rolling shown in Fig. 6 takes up
It is identical to put with the rolling bearing system shown in Fig. 3 (Fig. 5).
Embodiments disclosed above is for illustration purposes only, it is not intended to the limitation present invention.That is, the rolling of the present invention
Moving axis bearing apparatus is not limited to shown construction, and can have other constructions within the scope of the invention.In above-mentioned implementation
In example (referring to Fig. 3), the nozzle 50 for pumping 43 is opened at the position (the nearer position from radially inner side) nearer from inner ring 21.So
And although being not shown, nozzle 50 can be opened at the position nearer from outer shroud 22 (at the position nearer from radial outside),
And in this case, the target for oil droplet P can be outer-race ball track 26.In this case, windshied part 51 can be located at outer shroud
Between 22 and retainer 24, and fuel feeding list can be set on the part with smaller shoulder diameter of the counterbore side in outer shroud 22
Member 40.That is, it can will be set as from the injection direction for the oil droplet P that nozzle 50 sprays towards in inner ring 21 or outer shroud 22
The direction of raceway, rolling element (ball 23) are contacted with rolling path rolling.In the above-described embodiments, bearing portion 20 is angular contact ball
Bearing.However, the type of bearing is not limited to angular contact ball bearing, and bearing portion 20 can be zanjon ball bearing, taper
Roller bearing or cylindrical roller bearing.Rolling bearing system 10 can be applied to component in addition to the main shaft of lathe,
Device etc..
Claims (9)
1. a kind of rolling bearing system, it is characterised in that including：
Bearing portion (20), the bearing portion (20) include inner ring (21), outer shroud (22), intervention the inner ring (21) and it is described outside
The retainer (24) of multiple rolling elements (23) and the multiple rolling element (23) of holding between ring (22)；With
Oil supply unit (40), the oil supply unit (40) are disposed adjacently in the axial direction with the bearing portion (20), and
The oil supply unit (40) includes the pump (43) with jet port (50), and lubricating oil is sprayed as oil droplet from the jet port (50)
The bearing portion (20) is mapped to,
Wherein described oil supply unit (40) further comprises windshied part (51), and the windshied part (51) is covered from the jet port
(50) oil droplet of injection by by region, and the windshied part (51) be arranged in the windshied part (51) and
Very close to each other between the pump (43) that the jet port (50) is opened, the windshied part (51) is towards in the bearing portion (20)
Target open.
2. rolling bearing system according to claim 1, wherein the spray of the oil droplet sprayed from the jet port (50)
Penetrate the direction that direction is directed towards the inner ring (21) or the raceway in the outer shroud (22), the multiple rolling element (23) and institute
State rolling path rolling contact.
3. rolling bearing system according to claim 2, wherein from the entrance of the jet port (50) towards the injection
The direction of the outlet of mouth (50) is tilted compared with bearing axis so that the injection direction is directed towards the side of the raceway
To jet port (50) linear extension.
4. rolling bearing system according to claim 3, wherein oil droplet is in described in the windshied part (51)
Portion region compared with the bearing axis with the entrance from the jet port (50) towards the jet port (50)
The side that the direction of the outlet is identical is inclined upwardly.
5. the rolling bearing system according to any one of Claims 1-4, wherein the windshied part (51) is in circumferential side
It is arranged on upwards in a part for the oil supply unit (40), and the windshied part (51) has arc, and the arc exists
There is predetermined length in the circumferential direction.
6. rolling bearing system according to claim 5, wherein the windshied part (51) has radical length towards each
The shape that a circumferential end reduces.
7. the rolling bearing system according to any one of Claims 1-4, wherein：
For the bearing portion (20), the oil supply unit (40) is arranged on the first side on the axial direction,
So as to adjacent with the bearing portion (20)；
The retainer (24) includes first annular portion and bar portion, for the multiple rolling element (23), described the
One ring part is arranged on first side on the axial direction, and the bar portion is from the first annular portion towards the axis
The second side extension on direction；And
The terminal part of the windshied part (51) is positioned from the multiple rolling element (23) than in the first annular portion
The outer surface of first side on the axial direction is near from the multiple rolling element (23).
8. rolling bearing system according to claim 7, wherein the first annular portion is equipped with gap forming portion, between described
Gap forming portion is configured to form gap between the terminal part of the first annular portion and the windshied part (51).
9. rolling bearing system according to claim 8, wherein：
In addition to the first annular portion, the retainer (24) further comprises the second ring part, compared with the multiple
For rolling element (23), second ring part is arranged on the second side on the axial direction, and described
Second ring portion is connected to the bar portion；And
The cross sectional shape of the first annular portion and second ring part is mutually symmetrical.
Applications Claiming Priority (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2016220255 | 2016-11-11 | ||
| JP2016-220255 | 2016-11-11 | ||
| JP2017139173A JP2018084324A (en) | 2016-11-11 | 2017-07-18 | Rolling bearing device |
| JP2017-139173 | 2017-07-18 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108071690A true CN108071690A (en) | 2018-05-25 |
| CN108071690B CN108071690B (en) | 2021-03-02 |
Family
ID=62026290
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711108459.3A Expired - Fee Related CN108071690B (en) | 2016-11-11 | 2017-11-09 | Rolling bearing device |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN108071690B (en) |
| DE (1) | DE102017125950A1 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114904670A (en) * | 2021-02-08 | 2022-08-16 | 中国航发商用航空发动机有限责任公司 | Oil supply nozzle of under-ring lubricating device and under-ring lubricating device |
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|---|---|---|---|---|
| CN101052815A (en) * | 2004-10-29 | 2007-10-10 | 株式会社捷太格特 | Rolling bearing device and spindle |
| CN101080582A (en) * | 2004-12-14 | 2007-11-28 | 株式会社捷太格特 | Rolling bearing device |
| JP2008106900A (en) * | 2006-10-27 | 2008-05-08 | Jtekt Corp | Rolling bearing device |
| CN203230740U (en) * | 2012-03-30 | 2013-10-09 | 日本精工株式会社 | Rolling bearing device provided with lubricating agent supply mechanism |
| CN104019136A (en) * | 2013-03-01 | 2014-09-03 | 株式会社捷太格特 | Rolling bearing device |
| CN105190066A (en) * | 2013-05-10 | 2015-12-23 | Ntn株式会社 | Rolling bearing device |
| CN105299052A (en) * | 2014-07-23 | 2016-02-03 | 株式会社捷太格特 | Rolling bearing apparatus and lubrication unit |
| CN105917130A (en) * | 2014-01-21 | 2016-08-31 | Ntn株式会社 | Roller bearing device |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4089363B2 (en) | 2002-09-13 | 2008-05-28 | 株式会社ジェイテクト | Rolling bearing device |
-
2017
- 2017-11-07 DE DE102017125950.3A patent/DE102017125950A1/en not_active Withdrawn
- 2017-11-09 CN CN201711108459.3A patent/CN108071690B/en not_active Expired - Fee Related
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101052815A (en) * | 2004-10-29 | 2007-10-10 | 株式会社捷太格特 | Rolling bearing device and spindle |
| CN101080582A (en) * | 2004-12-14 | 2007-11-28 | 株式会社捷太格特 | Rolling bearing device |
| JP2008106900A (en) * | 2006-10-27 | 2008-05-08 | Jtekt Corp | Rolling bearing device |
| CN203230740U (en) * | 2012-03-30 | 2013-10-09 | 日本精工株式会社 | Rolling bearing device provided with lubricating agent supply mechanism |
| CN104019136A (en) * | 2013-03-01 | 2014-09-03 | 株式会社捷太格特 | Rolling bearing device |
| CN105190066A (en) * | 2013-05-10 | 2015-12-23 | Ntn株式会社 | Rolling bearing device |
| CN105917130A (en) * | 2014-01-21 | 2016-08-31 | Ntn株式会社 | Roller bearing device |
| CN105299052A (en) * | 2014-07-23 | 2016-02-03 | 株式会社捷太格特 | Rolling bearing apparatus and lubrication unit |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114904670A (en) * | 2021-02-08 | 2022-08-16 | 中国航发商用航空发动机有限责任公司 | Oil supply nozzle of under-ring lubricating device and under-ring lubricating device |
| CN114904670B (en) * | 2021-02-08 | 2024-03-01 | 中国航发商用航空发动机有限责任公司 | Oil supply nozzle of lubricating device under ring and lubricating device under ring |
Also Published As
| Publication number | Publication date |
|---|---|
| DE102017125950A1 (en) | 2018-05-17 |
| CN108071690B (en) | 2021-03-02 |
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